from tkinter import*

print('Введите начальную координату X:')
X = int (input())
print ('Введите начальную координату Y:')
Y = int (input())
print ('Введите коэффициент увеличения N:')
N = int (input())

coords = [0,0, 10,0, 10,10, 20,10, 20,20, 10,20, 10,30, 0,30]

if N == 0 and X>=0 and X<=500 and Y>=0 and Y<=500:
    pass
else:
    if N > 0 and 0*N+X>=0 and 0*N+Y>=0 and 20*N+X<=500 and 20*N+Y<=500:
        pass
    else:
        if N < 0 and 20*N+X>=0 and 20*N+Y>=0 and 0*N+X<=500 and 0*N+Y<=500:
            pass
        else:
            print ('Размер фигуры превышает максимальный размер поля')
            exit()
            


root = Tk ()
root.title ("ИТ марафон")
root.geometry ("500x500")

canvas = Canvas (bg="white", width=500, height=500)
canvas.pack (anchor=CENTER, expand=1)

canvas.create_polygon(coords [0] *N+X, coords [1] *N+Y,
                      coords [2] *N+X, coords [3] *N+Y,
                      coords [4] *N+X, coords [5] *N+Y,
                      coords [6] *N+X, coords [7] *N+Y,
                      coords [8] *N+X, coords [9] *N+Y,
                      coords [10] *N+X, coords [11] *N+Y,
                      coords [12] *N+X, coords [13] *N+Y,
                      coords [14] *N+X, coords [15] *N+Y,)

root.mainloop()
